package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetMealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetMealDishMapper setMealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()!=0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(id);
            });

            dishFlavorMapper.insert(flavors);
        }

    }

    @Override
    public PageResult page(DishPageQueryDTO dto) {
        PageHelper.startPage(dto.getPage(),dto.getPageSize());
        Page<DishVO> dishes1 = dishMapper.page(dto.getName(),dto.getStatus(),dto.getCategoryId());
        return new PageResult(dishes1.getTotal(),dishes1.getResult());
    }

    @Override
    @Transactional
    public void delete(List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus()==1){
                throw new DeletionNotAllowedException("删除错误");
            }
        }
        if (setMealDishMapper.getSetMealIdsByDishIds(ids).size()!=0){
            throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ENABLE_FAILED);
        }
        dishMapper.delete(ids);
        for (Long id : ids) {
            dishFlavorMapper.delete(id);
        }
    }

    @Override
    public DishVO getById(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.delete(dishDTO.getId());
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()!=0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insert(flavors);
        }

    }
}
